We next choose two representative simulations to visualize the estimates of \(f_0\)  and \(f_0^{\prime }\)  in Figure REF , where the dotted line stands for the posterior mean \(\hat{f}_n\)  and dashes lines for the 95% simultaneous \(L_\infty \)  credible bands. For the B-spline prior, we use the default setting as in [1]} by specifying the inflation factor \(\rho =0.5\) . Note that these credible bands have fixed width by construction.
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